Screen-frame.



J. L. CABRAL.

SCREEN FRAME.

APPLICATION FILEDJUNE 24,1918.

Patented Nov. 26,

JESSE L. CABRAL, OF BROCKTON, MASSACHUSETTS.

SCREEN-FRAME.

Specification of Letters Patent.

Patented Nov. 26-, 1918.-

Application filed .Tune 24, 1918. Serial No. 241,463.

To all whom it may concern:

Be it known that I, J1-:ssn L. CABRAL, a citizen of the United States, and resident of Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Screen- Frames, of which the following is a specification. 1

This invention relates to screen frames, and has for its object to provide such a frame that is made up of a plurality of sections whereby the frame may be shipped in a knock-down condition, said frame sections being also adjustable with respect to each other, so that the frame may be extended to fit openings of different sizes.

A further objectof the invention is to provide frame runs formed of a plurality of sections, which sections are also endwise adjustable with respect to each other, for the purpose of accommodating the screen frames as adjusted to fit openings of different sizes.

lVith these and other objects in view, the

invention consists of certain novel featuresat substantially a-right angle to the maining portion. 1 Fig. 4- shows the doubled edge of the frame section in the act of being bent at the cut in the lips to form a right angle corner, the metal over the corner being continuous.

Fig. 5 is a perspective View showing a portion of two of the corner section members,

the end of one being large enough to receive that of the other Within its fold.

Fig. 6- is a face view showing one of the corner members and a portion of an adjacent section as fitted into the doubled frame portion.

Fig. 7 is a section on line 77 of Fig. 6, showing the end portion of one frame as fitting inside of that of the other frame and smaller end of one fitting the larger end of the other.

Referring to the drawings, 10 designates the strip of metal from which the frame sections are made as blanked out of sheet stock, the same being provided with a plurality of rivet holes 11 along its opposite edges, these edges being slit inwardly from the opposite margins as at 12 for the reason presently described.

After this block has been so formed it is folded longitudinally through its middle, forming two spaced-apart lips 18 and 14, the under lip ll extending beyond the opposite lip to facilitate positioning the screen cloth therebetween. The doubled edge 15 of this folded strip is now bent up at substantially a right angle to those lips 13"and ll, to stiffen the frame and form a broad sliding edge, the fold of 'this metal is so formed as to leave an opening in the fold a little larger at one end of the strip than at the other so that the smaller end 22 of one section may fit into the larger end 23 of the next section, see Figs. 5 and 6, upon connecting the sections together.

In order to form the corner in the sections, I bend this strip at the cut 12, as shown in Fig. 4, so that the lips of one portion will fit over those of the other portion and when the portions are brought to a right angle, the edge 16 at the cut of one portion will abut against the angled wall of the doubled edge portion of the other, thereby forming a stop to determine the extent of the bend and limit it to 90. It is nowonly necessary to pass the rivet 17 through these four overlapping, interlocking lip portions and the corner member is completed. I

To form the frames four of these corner members are made in this manner and the end of each corner section is arranged to fit and slide into the folded portion of the next adjacent corner member. It will be seen by such adjustability the frame may be made the size to fit any desired opening within the limit of its height. If it shouldbe desired to provide a frame larger than the greatest length of the corner members then intermediate members of the same cross section and of any desired length may be inserted into the ends of these angled sections to provide a frame of any desired size.

After the size of the frame has been de termincd and the parts riveted together it is now only necessary to bend up the lips 13 and 14 and extend the edge of the wire screen 24 between them, then pass rivets 18 through the holes in the lips and through the meshes of the screen cloth thereby binding the whole firmly together. It is found in practice to be of advantage in many cases to employ split rivets so that when desired the screen may be readil taken apart and the size changed to fit other openings. in which case it is only necessary toretit the screen cloth in the frame and the new sized frame is again complete.

Another feature oftlns invention is the provision of trouglrshaped edge runs 19 and 20 which are made in sections each section being tapered in the direction of its length -whereby any two may be made to fit one within the other and whichsections are adapted to be relatively adjustable so as t0 accommodate adjustable screen frames of ditlerent heights. These trough -shaped runs are provided with screw holes at their ends whereby they are fastened to the casinoof the opening. I

()ne of the features of this nvention is that the parts of the frame and the run may no all made and sold in a knockdown condition to facilitate shipping and handling. Then again by forming these parts so that any two sections will fit to ether, the purhaser of a set of parts will have no ditiiculty in assembling them as one frame section will tit nicely and slide within the other thus being able to readily adjust the frame the desired size. which feature is true of the trough-shaped run strips which are in a tapering form so that. the small end of one will lit into the large end of any of the others and be longitudinally extendible with respect to each other to accommodate frames l3 my improved construction this screen frame only he completely assembled and applied to a window. door or other opening withou! the expense of any mechanical skill.

susceptible,

andsaid folded a right angle corner with the metal continu- I The foregoing description is directed solely toward the construction illustrated, but f desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is the invention. being defined and limited only by the terms of the appended claims.

I claim:

1. A screen frame made of a strip of sheet metal folded lengthwise upon itself providing a frame having two oppositelymlisposed spaced-apart Walls, the edges of said walls providing a slightly separated pair of lip portions between which the screen cloth is held, the folded edge portion of the strip being bent up at substantially a right angle to said double lin portion, both of said lip p01- tions being cut transversely and said folded edge portion bent at these cuts to form a right angle corner with the metal continnous thereover, the cut portions of said lips over-lapping each other at the corner forming' four ply of metal there, and means for securing said o\'*er-lapping corner lips together. I

2. A screen frame made of a plurality of telesco iwing sections, each section being formed of a strip of sheet metal folded lengthwise upon itself forming a frame ha ving a pair of oppositely disposed spaced apart walls, the edges of said walls provid ing a slightly separated pair of lip portions between which the screen cloth is held, the; folded edge portion of the strip being bent up at substantially a right angle to said lip portions, said lips being out transversely edge bent the cut to form ous thereower, said lip portions over-lapping each othe at the corner forming four thicknesses of metal there, and means for securing said over-lapping lip portions together, one end. of oath of said telescoping sections be ing adapted to fit and slide into the corrusponding end of the next hollow section w iereby the size of said frame may be varied.

In testimony whereof ll ailix my signature I L. CABRAL. 

